Vitrectomy surgical apparatus
View Patent ↗A vitrectomy apparatus is provided, including a pressure source, a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device, a sensor configured to sense pressure provided from the cut valve, and a controller configured to control operation of the cut valve based on pressure sensed by the sensor.
1. A vitrectomy apparatus, comprising:
a pressure source;
a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device;
a sensor configured to sense a pressure provided from the cut valve;
a controller configured to:
receive an input of a desired amount of material to be processed;
determine an amount of material processed based on the sensed pressure, an aspiration rate and a dwell time; and
send commands to the cut value to control operation of the cut valve based on a comparison of the desired amount of material and the determined amount of material.
2. The vitrectomy apparatus of claim 1 , wherein the sensor is attached to a pneumatic manifold configured to have gas pass there through, wherein the pneumatic manifold is configured for attachment to components of the vitrectomy apparatus.
3. The vitrectomy apparatus of claim 1 , wherein the pressure source comprises a pump comprising a pump core and a pressure regulator configured to control pressure supplied from the pump core.
4. The vitrectomy apparatus of claim 3 , further comprising:
tubing connecting the pump to the cut valve;
tubing connecting the cut valve to a pneumatic manifold; and
tubing connecting the pneumatic manifold to the vitrectomy cutting device.
5. The vitrectomy apparatus of claim 1 , wherein the sensor comprises a passage configured to monitor pneumatic pressure at a point between the cut valve and the vitrectomy cutting device.
6. The vitrectomy apparatus of claim 1 , wherein the cut valve is pneumatically connected to the sensor and electronically connected to the controller.
7. The vitrectomy apparatus of claim 1 , wherein the controller is further configured to:
store a highest peak pressure sensed by the sensor;
store a lowest trough pressure sensed by the sensor;
determine a blade extension time and a blade retraction time based on the highest peak pressure and the lowest trough pressure; and
send the commands to the cut valve based upon the blade extension time and the blade retraction time.
8. A vitrectomy apparatus, comprising:
a vitrectomy handpiece comprising a vitrectomy cutting device;
a sensing arrangement configured to sense pressure;
tubing connecting the vitrectomy handpiece to the sensing arrangement;
a cut valve connected to the sensing arrangement;
and a pressure source configured to provide pressure to the cut valve;
wherein the sensing arrangement comprises a sensor and a controller, wherein the controller is configured to:
receive data from the sensor,
receive an input of a desired amount of material to be processed,
determine an amount of material processed by the vitrectomy cutting device based on the data from the sensor, an aspiration rate and a dwell time, and
send selectively timed on and off commands to the cut valve based on a comparison of the desired amount of material and the determined amount of material to facilitate a vitrectomy procedure.
9. The vitrectomy apparatus of claim 8 , wherein the sensor is attached to a pneumatic manifold configured to have gas pass there through, wherein the pneumatic manifold is configured for attachment to components of the vitrectomy apparatus.
10. The vitrectomy apparatus of claim 8 , wherein the pressure source comprises a pump comprising a pump core and a pressure regulator configured to control pressure supplied from the pump core.
11. The vitrectomy apparatus of claim 10 , further comprising:
tubing connecting the pump to the cut valve;
and tubing connecting the cut valve to a pneumatic manifold.
12. The vitrectomy apparatus of claim 8 , wherein the sensor comprises a passage configured to monitor pneumatic pressure at a point between the cut valve and the vitrectomy cutting device.
13. The vitrectomy apparatus of claim 8 , wherein the cut valve is pneumatically connected to the sensor and electronically connected to the controller.
14. The vitrectomy apparatus of claim 8 , wherein the controller is further configured to:
store a highest peak pressure sensed by the sensor;
store a lowest trough pressure sensed by the sensor;
determine a blade extension time and a blade retraction time based on the highest peak pressure and the lowest trough pressure; and
send the selectively timed on and off commands to the cut valve based upon the blade extension time and the blade retraction time.